Adrenergic receptors of mammalian tracheal smooth muscle have been characterized. After beta-adrenergic blockade with propranolol, the responses to epinephrine in both human and guinea-pig tracheal smooth muscle were ...

The action of prostaglandin F2a (PGF2a)1 on guinea-pig isolated trachea has been studied. Special emphasis was placed on considerations of the possible beta-adrenergic blocking activities of this essential fatty-acid ...